588results about "Thermal non-catalytic cracking" patented technology

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation / energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Processing an oligomerization feed (8) comprising at least a portion of the olefin stream (3) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); c) Hydrogenating at least a portion of the oligomerized olefin stream (10); wherein a fraction of the oligomerized olefin stream (10) is withdrawn as a recycle stream (40a, 40b) and passed to a steamcracking unit (41) to produce a steamcracking product stream (42), wherein at least a portion of the steamcracking product stream (42) is included in the oligomerization feed (8).

The invention relates to the field of cracking, and discloses a direct electric heating cracking furnace, application and a method for preparing olefin through cracking, the cracking furnace comprises a preheating section, a cracking section and a post-treatment section, and the cracking section adopts a metal furnace tube with resistance gradually reduced in the material flowing direction; the metal furnace tube is directly connected with the electric heating component; the preheating section is used for preheating cracking raw materials and diluting steam; the cracking section is used for cracking the preheated cracking raw material in the presence of the preheated steam; and the post-treatment section is used for cooling and separating the cracking product. According to the direct electric heating cracking furnace disclosed by the invention, heat is directly generated from the heated metal furnace tube instead of being transmitted from the outside through heat radiation, so that the thermal efficiency is high, the heat loss is small, the heating speed is high, the cracking preparation of low-carbon olefin is facilitated, and each product has relatively high yield.

A composition having a recycle content value is obtained by reacting a recycle content feedstock to make a recycle content alpha olefin or by deducting from a recycle inventory a recycle content value applied to an alpha olefin composition. At least a portion of the recycle content value in the feedstock or in an allotment obtained by an alpha olefin manufacturer has its origin in recycled waste and / or pyrolysis of recycled waste and / or in thermal steam cracking of recycle content pyoil.

A composition having a recycle content value is obtained by reacting a recycle content feedstock to make a recycle content oxo alcohol or oxo plasticizer or by deducting from a recycle inventory a recycle content value applied to an oxo alcohol or oxo plasticizer composition. At least a portion of the recycle content value in the feedstock or in an allotment obtained by an oxo alcohol or oxo plasticizer manufacturer has its origin in recycled waste and / or pyrolysis of recycled waste and / or in thermal steam cracking of recycle content pyoil.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. The waste plastic can be liquified before being introduced to downstream processing. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

Systems and methods for producing olefins and / or aromatics are disclosed. The methods include aquaprocessing of crude and / or heavy oils, at high severity, prior to processing in a steam cracking unit to produce ethylene and propylene at a mass ratio of propylene to ethylene (P / E) of 0.6 or higher. The systems include an aquaprocessing unit capable of being operated at high severity and a steam cracking unit capable of producing ethylene and propylene at a mass ratio of propylene to ethylene (P / E) of 0.6 or higher.

A method for producing and transferring heat The method comprises producing heat in a first thermal device (910) and heating particulate material in the first thermal device (910) and conveying a part (MIH) of the particulate material, the part (MIH) having a first temperature (T1), from the first thermal device (910) to a mixing unit (100). The method comprises conveying a part (MIC) of particulate material, the part (MIC) having a second temperature (T2), from a second thermal device (920) to the mixing unit (100) and mixing the part (MIH) of the particulate material coming from the first thermal device (910) with the part (MIC) of the particulate material coming from the second thermal device (920) in the mixing unit (100) to form particulate material having a third temperature (T3). The method comprises conveying at least a part (MOH) of the particulate material having the third temperature (T3) from the mixing unit (100) to the second thermal device (920). A system for the same. A mixing unit suitable for the method.

An electrical heater system includes a heater block, a plurality of heating element holes transversing the heater block, a plurality of radiant coil holes transversing the heater block, a plurality of electrical heating elements disposed within the plurality of heating element holes, and a plurality of radiant coils disposed within the plurality of radiant coil holes. A process for olefin production includes heating a plurality of radiant coils using an electrical heater, feeding a hydrocarbon mixture into a plurality of inlet tubes, controlling a temperature of a plurality of electrical heating elements to heat a heater block to a desired temperature, cracking the hydrocarbon mixture in the plurality of radiant coils to produce a cracked effluent, collecting the cracked effluent through a plurality of outlet tubes, and cooling the cracked effluent using a heat exchanger.

A method is provided for manufacturing vinyl chloride monomer (VCM), the method comprises subjecting ethylene dichloride (EDC) to thermal cracking to yield a VCM-containing gaseous product, in which method an amount of thermal energy required to heat a stream of EDC-containing process fluid to temperature(s), at which cracking reactions occur, is produced and transferred to said EDC-containing process fluid using a rotary apparatus (100). A VCM production unit and use of the rotary apparatus in production of vinyl chloride monomer from EDC through therma cracking, are further provided.

The invention relates to a method for obtaining hydrocarbon fluids from a fossil heavy hydrocarbon feedstock and a tyre oil, the method comprising: a) a step of providing a tyre oil or at least one fraction of a tyre oil; b) a step of thermal cracking in a visbreaking unit or a coking unit, during which the fossil heavy hydrocarbon feedstock, or a fraction of the heavy fraction of the fossil heavy hydrocarbon feedstock, is subjected to thermal cracking under visbreaking or coking conditions in the presence of tyre oil or the at least one tyre-oil fraction provided in step a), thereby producing an at least partially cracked effluent and a liquid or solid residue; c) a fractionation step in which the effluent from step b) is fractionated into at least one liquid hydrocarbon fraction.

The invention relates to the technical field of biomass treatment, in particular to a biomass gasification system and a biomass gasification method. The biomass gasification system comprises a gasification furnace which is provided with a furnace body, a biomass inlet communicated with the furnace body, a gasification agent inlet and a crude synthesis gas outlet; an inlet of the waste heat boiler is communicated with the crude synthesis gas outlet, and an outlet of the waste heat boiler is connected with a negative pressure device; an inlet of the dust remover is communicated with the negative pressure device, and an outlet of the dust remover is connected with a cooling device. The biomass and the gasifying agent are gasified and reacted in the gasifier to generate crude synthesis gas, the crude synthesis gas is discharged after being dedusted by the deduster and cooled by the cooling device in sequence under the negative pressure environment provided by the negative pressure device, and due to the arrangement of the negative pressure device, the atmospheric pressure in the system is always lower than the atmospheric pressure outside the system; therefore, the synthesis gas generated in the system cannot be leaked, but is discharged from a unified outlet after being treated, so that the normal operation of equipment is ensured, and the potential safety hazard is reduced.

The present application provides a pyrolysis furnace tube coating material composition and a pyrolysis furnace tube coating and a preparation method thereof. The coating material composition comprises: a first coating material and a second coating material; the first coating material comprises the following components: a catalytically active component, a complexing agent, a buffer and a dispersing agent; and the second coating material is a liquid slurry or a solid particle mixture. The preparation method of the coating comprises: pretreating a substrate surface; loading the first coating material on the pretreated substrate surface, and forming a first coating after atmosphere stabilization treatment; loading the second coating material on the surface of the first coating, and obtaining the coating after high-temperature hot permeation. The pyrolysis furnace tube coating prepared by the coating material composition of the present application has a higher dispersion degree of the catalytically active element, and the catalytically active element is relatively stable; in the repeated use process, the migration phenomenon of the overall elements in the coating is less, and the element loss is lower.

Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and / or polypropylene and preparing a stable blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3 olefin / paraffin mixture is recovered from the hydrocracking unit. The C3 paraffins and C3 olefins are separated into different fractions with the C3 olefin fraction passed to a propylene polymerization reactor, and the C3 paraffin fraction passed optionally to a dehydrogenation unit to produce additional propylene. A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

A recycle content oxo glycol and method of making a recycle content oxo glycol wherein the recycle content is derived directly or indirectly from the cracking of recycle content pyrolysis oil and / or gas. The cracking of the pyrolysis oil can be conducted in a gas furnace or a split furnace.

A method of producing hydrocarbons from an organic material. The method includes: dissolving a solid including an organic material in a solvent to form a carbon liquid feed; introducing the carbon liquid feed into a liquid inlet of a feed assembly of a reactor system; mixing the carbon liquid feed and an oxidant gas feed in the feed assembly; combusting, in the feed assembly, at least a portion of the carbon liquid feed to produce an at least partially combusted gas mixture and heat; introducing the carbon liquid feed and the at least partially combusted gas mixture to a reactor vessel in fluid connection with the feed assembly; and in the reactor vessel, converting, using the heat, the organic material in the carbon liquid feed into a high value chemical.

Device in the form of a reactor arranged and operative for the recovery of hydrocarbon in gaseous form from a disintegrated solid hydrocarbon-based material, which reactor comprises a rotor driven in rotation inside a circular rotor housing shell comprising a set of rotor discs each of which has a number of rotor arms extending in radial directions from a rotor hub, wherein the radial distance between the rotor hub and the rotor housing shell is increasing in the direction towards an outlet for the recovered process gas from the reactor housing.

The invention relates to an apparatus for pyrolyzing fluid hydrocarbons to one or more hydrocarbon products, the apparatus comprising: - at least one recycle pump for forwarding fluid hydrocarbons; and - at least one recycle heat exchanger providing at least one tube for the fluid hydrocarbons to pass; wherein the at least one recycle pump and / or the recycle heat exchanger are configured to establish a flow velocity of at least 1 m / s of the fluid hydrocarbons inside the at least one tube.

The invention relates to a method for treating a feedstock comprising a plastics-derived and / or tyre-derived and / or solid-recovered-fuel-derived pyrolysis oil, which method comprises: b) hydrogenation of the feedstock and a portion of the liquid effluent resulting from the separation step e1) to obtain a hydrogenated effluent; c) hydrotreatment of the hydrogenated effluent to obtain a hydrotreated effluent; d) hydrocracking of the hydrotreated effluent to obtain a hydrocracked effluent; e1) separation of the hydrocracked effluent at high temperature and high pressure to obtain a gaseous effluent and a liquid effluent, a portion of which is recycled upstream of step b); e2) a separation / washing step carried out at low temperature and high pressure, fed with the gaseous effluent and optionally the other portion of the liquid effluent resulting from step e1) and an aqueous solution, to obtain a hydrocarbon effluent freed of its impurities.

The present invention provides a method of preparing a pyrolysis oil from waste plastics, the method comprising the steps of: (S1) supplying a waste plastic raw material to a first reactor to perform primary pyrolysis, and upwardly discharging a gaseous stream generated by the pyrolysis; (S2) supplying the overhead gaseous stream of the first reactor to at least one distillation column and separating the overhead gaseous stream by boiling point to obtain a stream containing a C5-12 light oil (LO), a stream containing a C13-22 middle oil (MO), and a stream containing a C23 or higher heavy oil (HO); and (S3) supplying a portion of the middle oil (MO)-containing stream separated in the distillation column to a second reactor to perform secondary pyrolysis, and supplying a gaseous stream generated by the secondary pyrolysis to the distillation column, wherein the primary pyrolysis and the secondary pyrolysis are each performed under high pressure conditions of 2-40 bar.

An olefinic material production system may include a metal component comprising an outer surface, an anti-coking coating positioned over the metal component, and a refractory material layer positioned over the anti-coking coating, such that the anti-coking coating is positioned between the metal component and the refractory material layer. Also disclosed are methods for operating such an olefinic material production system.

The present invention relates to an apparatus for thermally decomposing a fluid hydrocarbon into one or more hydrocarbon products, comprising: at least one recycle pump for transporting the fluid hydrocarbon; and at least one recycle heat exchanger providing at least one tube through which the fluid hydrocarbon passes; wherein at least one recycle pump and / or recycle heat exchanger is configured to establish a flow velocity of at least 1 m / s of the fluid hydrocarbon in at least one tube.

A method for steam cracking is proposed, the method comprising operating a steam cracking furnace (100) with a radiant section (110) and a convection section (120), the radiant section (110) comprising a plurality of reaction tubes (111) and a plurality of burners (112) and the convection section (120) comprising a plurality of heat recovery units (121, 122). The proposed method includes operating the steam cracking furnace (100) using a group of gases to provide heat to the reaction tubes (111) and / or the heat recovery units (121, 122), the group of gases consisting of one or more combustible gases and a subgroup of further gases, the subgroup of further gases consisting of oxygen and one or more incombustible gases including nitrogen in a nitrogen content. In the proposed method, the oxygen is provided in the subgroup of further gases in a proportion lower than a proportion of oxygen in atmospheric air. The subgroup of further gases, or one or more gas components used in forming the subgroup of further gases, is subjected to a preheating step to a temperature above 500 °C upstream of the burners (111), and the preheating step is performed using electric energy in an energy amount which is at least 20% of an energy amount provided by the lower heating value of the one or more combustible gases (111). A corresponding apparatus (1000) is also proposed herein.

A pyrolysis oil is contacted with a hydrocracking catalyst disposed within a hydrocracking unit to convert at least a portion of the pyrolysis oil into a lower alkane to produce a hydrocracking product stream. The hydrocracking product stream is separated into an ethane feed stream comprising ethane and a C3+ feed stream comprising at least one of a C3 alkane, a C4 alkane, or a higher alkane. The C3+ feed stream is diluted with steam to form a steam cracking feed stream. The steam cracking feed stream is heated in a steam cracker to convert at least a portion of the C3+ feed stream to ethylene. The ethane feed stream is diluted with an oxidant to form an oxidative dehydrogenation (ODH) feed stream. The ODH feed stream is contacted with an ODH catalyst disposed within an ODH reactor to convert at least a portion of the ethane to ethylene.

Provided are (1) a method for converting ethanol, comprising contacting a raw material mixture containing ethylene and ethanol with a catalyst in an adiabatic reactor to obtain a reaction gas containing an olefin having 3 or more carbon atoms, (2) a method for converting ethanol, comprising contacting a raw material mixture containing methanol and ethanol with a catalyst in an adiabatic reactor to obtain a reaction gas containing an olefin having 3 or more carbon atoms, and (3) a method for converting ethanol, comprising: contacting a raw material mixture containing ethanol and ethylene with a catalyst in an adiabatic reactor to obtain a reaction gas containing an olefin having 3 or more carbon atoms; separating the reaction gas into fraction A mainly containing a hydrocarbon having 2 to 3 carbon atoms and fraction B mainly containing a hydrocarbon having 4 to 6 carbon atoms by a first distillation column; and recycling at least a portion of the fraction A as a portion of the raw material mixture to the reaction step.

The present disclosure provides a method and apparatus for high purity hydrogen combustion liquid hydrocarbon cracking. In one embodiment, the method may include: preheating a liquid hydrocarbon feedstock in a first heat exchanger external to the furnace; adding steam to the preheated liquid hydrocarbon feedstock to form a fully or substantially fully vaporized stream; heating the fully or substantially fully vaporized stream in a second heat exchanger external to the furnace; and cracking the heated fully or substantially fully vaporized stream after preheating the heated fully or substantially fully vaporized stream in the furnace to form a cracked gas stream comprising ethylene and hydrogen.

This invention discloses an organic polysulfide, its preparation method, and its applications. The organic polysulfide has a sulfur content of 45% or more, preferably 50wt%-80wt%, and the organic sulfur composition contains a cyclic trisulfide CnR2nS3. The preparation method of the organic polysulfide includes the following steps: elemental sulfur and unsaturated hydrocarbons react under the catalysis of an alkaline substance. The reaction temperature is controlled by heating the material system containing elemental sulfur, monitoring the viscosity coefficient of the material system, and recording the temperature of the material system as T when the viscosity coefficient gradually increases. The temperature of the material system is controlled to be 0-15°C above T. After the reaction is continued for a period of time, the temperature is lowered, and the liquid material is separated to obtain the sulfur-containing composition. The organic polysulfide not only has a simple and easy-to-control preparation method, but also contains cyclic organic polysulfide compounds with long sulfur chains and a high mass content of cyclic polysulfide compounds.

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Processing an oligomerization feed (8) comprising at least a portion of the olefin stream (3) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); c) Hydrogenating at least a portion of the oligomerized olefin stream (10); wherein a fraction of the oligomerized olefin stream (10) is withdrawn as a recycle stream (40a, 40b) and passed to a steamcracking unit (41) to produce a steamcracking product stream (42), wherein at least a portion of the steamcracking product stream (42) is included in the oligomerization feed (8).